SA618F30-C1 High Quality 1W High-Power Full-Duplex Audio Transmission Module
SA618F30-C1 is an upgraded, cost-effective, high-integration, high-power full-duplex intercom module from NiceRF. It features a built-in high-speed microcontroller, audio Codec, echo cancellation circuit, ESD protection, high-performance RF chip, and amplifier. The module provides a standard serial port for communication, allowing users to easily configure parameters and control transmission and reception functions. By connecting an audio amplifier, microphone, and speaker, it can function as a compact intercom. Its simplified interface and ultra-compact size make it suitable for various applications, enabling seamless integration into handheld devices to enhance the overall performance of terminal products.
SA618F30-C1 full-duplex intercom module supports 8 users for simultaneous high-quality calls, featuring 8-channel concurrent functionality with unlimited reception, ensuring each user enjoys an excellent audio experience. Audio quality during 8-channel concurrent use is much better than other similar products.
SA618F30-C1 is produced and tested using lead-free processes, complying with RoHS and REACH standards.
Frequency Band 410~480MHz(customizable 150-960 MHz) Up to 8 devices transmit simultaneously ( Receive unlimited)
Echo cancellation function
VOX function
Mesh Network
I2S Digital audio & analog audio
Line In + Mic - input
Full duplex data transmission;
Support data transmission
Sleep low power consumption
Support OTA &Serial upgrade
3-4KM transmission distance in the open area
High integration and small size
Applications
High-quality full duplex walkie talkie
Conference telephone system
Building community security system
Security intercom system for special scenarios
Earphone walkie talkie
Special job assignment walkie talkie
Analog input & output application circuit
I2S Input & output application circuit
Pin NO.
Pin name
I/O
Description
1
TXLED
O
Transmitting indicator, connected with external led, turn on by low level output when data or voice is transmitting, (suggest 1K ohm resistor for current limitation)
2
RST
I
Module reset pin, externally pull down for more than 5ms will reset the module
3, 6, 10, 12,15,19
GND
Ground
4
MIC_N_IN
I
Negative electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
5
MIC_P_IN
I
Positive electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
7
Aux_IN
I
External audio input signal, maximum 1 VRMS
8
LINE_OUT
O
External 16-ohm headphones can be connected, requiring an additional LC low-pass filter circuit to eliminate RF interference. Refer to the typical circuit.
9
Reserved
Module test pins should be left unconnected by the user.
11
+3.3V Out
O
3.3v regulator out, maximum 50mA loading
13
ANT
Connected with 50ohm Antenna
14
VCC
Power supply ( 3.3 – 5.5V )
16
SDIN
I
Connected with External I2S device, ( 0 – 3.3V )
17
BCLK
O
18
WS
O
20
SD
O
21
PTT
I
module transmit pin is pulled low to enter transmit mode, with an internal pull-up resistor, defaulting to a high-level output
22
TXD
O
Serial transmit pin (voltage 0-3.3V)
23
RXD
I
Serial receive pin (voltage 0-3.3V)
24
MCLK
O
Connected with External I2S device (0-3.3V)
25
RXLED
O
Receiving indicator, connected with external led, turn on by low level output when data or voice received, (suggest 1K ohm resistor for current limitation)
26
CS
I
module sleep pin operates at high level for normal function and low level for sleep mode. It has an internal pull-up resistor, defaulting to high level
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